Find flights
When to book

Cheap flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport from £372

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/12. Fares are subject to change and may not be available on all flights or dates of travel.
STN — IAD
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Stansted to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Stansted to Dulles Intl
Explore the most affordable flight options available from Stansted to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2025.

Mon 29/1206:30STN - IAD
1 stop14h 05mMultiple Airlines
Mon 5/117:05IAD - STN
1 stop9h 45mMultiple Airlines
Deal found 25/10£405
Tue 9/1206:30STN - IAD
2 stops17h 00mMultiple Airlines
Tue 16/1219:40IAD - STN
2 stops13h 40mMultiple Airlines
Deal found 25/10£424
Wed 10/1206:30STN - IAD
1 stop18h 00mMultiple Airlines
Wed 17/1217:05IAD - STN
1 stop11h 45mMultiple Airlines
Deal found 26/10£433
Fri 5/1212:00STN - IAD
2 stops32h 15mMultiple Airlines
Tue 9/1217:30IAD - STN
2 stops25h 20mMultiple Airlines
Deal found 26/10£436
Tue 2/1220:25STN - IAD
2 stops24h 40mMultiple Airlines
Mon 8/1218:50IAD - STN
2 stops20h 10mMultiple Airlines
Deal found 26/10£440
Mon 24/1109:35STN - IAD
2 stops35h 30mMultiple Airlines
Mon 1/1218:05IAD - STN
2 stops20h 55mMultiple Airlines
Deal found 25/10£457
Tue 25/1106:30STN - IAD
2 stops17h 00mMultiple Airlines
Tue 2/1219:40IAD - STN
2 stops20h 40mMultiple Airlines
Deal found 26/10£466
Fri 28/1105:55STN - IAD
2 stops17h 35mMultiple Airlines
Fri 5/1219:40IAD - STN
2 stops17h 50mMultiple Airlines
Deal found 26/10£467
Tue 23/1206:00STN - IAD
1 stop14h 35mMultiple Airlines
Fri 2/117:05IAD - STN
1 stop9h 45mMultiple Airlines
Deal found 26/10£477
Thu 13/1105:55STN - IAD
2 stops17h 35mMultiple Airlines
Sun 16/1119:40IAD - STN
2 stops14h 30mMultiple Airlines
Deal found 25/10£481

Cheap flight deals from Stansted to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Stansted (STN) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 October 2025.

Round-trip from

£405

One-way from

£372

Popular in

July

Cheapest in

February

Average price

£559
29/12-5/1
  • 29/12-5/1
  • 2 total stops
  • 23h 50m total
  • London to Washington, D.C.
Search Deals
28/12
  • 28/12
  • 2 total stops
  • 38h 20m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£52 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Stansted to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 27 October 2025.
Use the filters below to find and compare flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Stansted

Fly to

Dulles Intl

Route

Depart

Return

Price

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 29/12

06:30-15:35

1 stop14h 05m

Washington, D.C. Dulles Intl

Mon 5/1

17:05-07:50

1 stop9h 45m

£405

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 9/12

06:30-15:35

1 stop14h 05m

Washington, D.C. Dulles Intl

Tue 16/12

21:00-14:20

1 stop12h 20m

£426

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 16/12

06:30-15:35

1 stop14h 05m

Washington, D.C. Dulles Intl

Sun 4/1

17:05-11:05

1 stop13h 00m

£426

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 25/11

06:30-18:30

2 stops17h 00m

Washington, D.C. Dulles Intl

Tue 2/12

19:40-21:20

2 stops20h 40m

£466

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Wed 3/12

07:40-21:00

2 stops18h 20m

Washington, D.C. Dulles Intl

Tue 9/12

17:30-23:50

2 stops25h 20m

£466

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 24/11

06:30-18:30

2 stops17h 00m

Washington, D.C. Dulles Intl

Mon 1/12

19:40-14:20

2 stops13h 40m

£466

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Wed 19/11

06:30-18:30

2 stops17h 00m

Washington, D.C. Dulles Intl

Wed 3/12

19:40-17:50

2 stops17h 10m

£466

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 13/1

17:20-21:00

2 stops32h 40m

Washington, D.C. Dulles Intl

Tue 27/1

17:30-23:50

2 stops25h 20m

£490

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Sat 24/1

05:55-18:30

2 stops17h 35m

Washington, D.C. Dulles Intl

Sat 31/1

19:40-22:20

2 stops21h 40m

£496

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 7/11

15:00-16:05

2 stops30h 05m

Washington, D.C. Dulles Intl

Fri 14/11

18:05-19:45

2 stops20h 40m

£503

Flights are sorted by cheapest return flights first.

Deals found on 26/10

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Stansted to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Stansted with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Stansted to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Stansted to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Stansted to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Stansted to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stansted to Dulles Intl.

  • Can I find deals for business class flights from Stansted to Dulles Intl?

    Yes. Cheapflights offers flight deals from Stansted to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park
Tysons

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Stansted to Dulles Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl from Stansted today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Stansted to Dulles Intl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dulles Intl from Stansted.

Can Cheapflights find flights from Stansted to Dulles Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Stansted to Dulles Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Stansted to Dulles Intl become cheaper?

Of course! You can now track prices for flights from Stansted to Dulles Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.